Attachment for silk-spinning machines.



A. E. CHEESEMAN.

ATTACHMENT FOR SILK SPINNING MACHINES.

APPLICIXTION FILED NOV. 20. I916.

1,223,566 Patented Apr. 24, I917.

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ATTACHMENT ron SILK SPINNING-MACHINES.

APPLICATION FILED NOV. 20, 1916.

1,223,560., Patented Apr. 24, 1917.

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OF PENNSYLVANIA.

To all whom it may 0on0 ATTACHMENT FOR OF BRADFORD, PENNSYLVANIA,ASSIGNOR TO THE LEON- Y, OF WILKES-BARRE, PENNSYLVANIA, A CORPORATIONSILK- SPINNING MACHINES.

Specification of Letters Patent.

em I

Be it known that I, ALvA Enivns'r Crrnnsn- MAN, a citizen 0 dent ofBradford, 5 of Pennsylvania, have i and useful Improvements forSilk-Spinning Frames,

lowing is a specification.

f the United States,

county of McKean, State nvented certain new and resiin Attachments ofwhich the fol- The present invention relates to improvements in spinningto such frames as silk.

The object of the frames and particularly are employed in spinninginvention is to provide means by which in event of breaking the spindledriving automatically dis engag belt the feed rolls will be ed from thepower shaft so that said rolls will not act to draw silk from the bobbter are being rotate ins except when the latd. In spnningframes of thecharacter to which the improvements resupporting spindles arefrictionally driven by the action of an endlate the bobbin less beltwhile driven, and

the feed rolls are positively with the constructions heretofore employedwhen the spindle driving belt breaks the feed rolls continue to drawsilk from the bobbins after they have ceased to rotate, thus causing Inthe accompanying of the spinning of the present less diagrammaticallyand not 1n frame not invention are shown more or slack twist. drawings,the parts forming a part detail in order that the embodiment of theinvention illustrated may large scale.

In the drawings,

be shown on a relatively gure 1 is a partial elevation and longitudinalsection through a silk spinning frame of common construction having theimprovements thereto hereinafter described applied Fig. 2 is a plan ofthe parts shown in Fig. 1.

Referring respectively end stand of spinning frame, said by longitudinalra the bobbin suppor As is usual in ma referred to, the spindl twolongitudinal sides of the machine an belt 5 endless driving to thedrawings, the head end stand a well-known form of stands 11 which aremounted spindles 4.

chines of the character es 4 are arranged in ils 3 o ting series 1, 2,designate and rear silk being connected or rows at opposite d arerotated by an which frictionally means whereby in event Patented Apr.24, 1917.

Application filed November 20, 1916. Serial No. 132,428.

bears against said spindles and is held in contact therewith by guidepulleys or rollers 6 arranged at suitable intervals. The belt 5 extendsabout pulleys 7 8, the latter being mounted on a main driving shaft 9supported in bearings on the end frame member 1.

A feed roll 10 is arranged above each of the spindles and adapted torotate a spool 11 in the ordinary manner so that the thread 12 will bedrawn from each bobbin 13 mounted on one of the spindles 4 and woundupon the proper spool as the rolls 10 are rotated. The rolls 10 are faston shafts which extend throughout the length of the frame and beyond thehead end stand 1. Each of said shafts is provided with a gear 14. On oneof the feed roll supporting shafts is mounted a pinion 15 with whichengages a pinion 16 that is supported on astub shaft so as to be movablelongitudinally thereof. Such pinion 16 when in operative position isadapted to connect the pinion 15 with a gear 17 that is geared to thedriving shaft 9'. However, by means hereinafter described, said pinion16 may be bodily shifted so that it will not connect the gear 17 andpinion 15 and thus disconnect the feed roll shaft from the main drivingshaft.

In the embodiment of the invention illustrated, the bodily movablepinion 16 is connected by a suitable yoke 20 with the upper end of alever 18 that is fulcrumed at an intermediate point of its length onbracket 19 attached to the end frame member 1 and the lower end of saidlever is connected with of the spindle driving belt 5 breaking saidlever will be rocked about its fulcrum to move the pinion 16 to theright (in Fig. 1) out of engagement with the pinion 15 and gear 17.

As previously described and as shown in the drawing, the driving pulley8 for the spindle driving belt 5 is mounted on the shaft 9 which isfixed in hearings on the end frame 1. The pulley 7 for said belt,however, is mounted on a slide or carriage 21 which is adapted to movein guides 22 on the frame. A suitable spring 23 acting through a lever24 acts to normally hold the slide or carriage 21 and pulley 7 thereonin such position that the belt 5 is maintained taut so that it willrotate the spindles. A rod or link 25- connects the lower end of lever18 with the slide 21. The

spring 23 is maintained under such strain or tension that if the belt 5breaks it will act to move the slide 21 farther to the-left and thismovement will be sufficient to actuate the lever 18 so as to bodilyshift the pinion 16 into inoperative position. It will be seen thereforethat if the spindle driving belt breaks the shafts driving the feedrolls 10 will be automatically disconnected from the main driving shaft9 and therefore thread will not be drawn from the bobbins after theyhave ceased to rotate; As shown, the rod 25 is adjustably connected withan arm 26 extending laterally from the lower end of the lever 18 so thatthe several parts may be readily adjusted to efiect prompt withdrawal ofthe pinion 16 from operative position when the slide or carriage 21 ismoved from its normal position as automatically results when the belt 5breaks.

' Having described the invention what is claimed and desired to besecured by Letters- Patent is,

1. In a spinning frame, the combination of a series of bobbin spindles,an endless belt arranged to rotate the spindles, feed rolls adapted todraw thread from bobbins supported on the spindles, a train of gears fordriving the feed rolls including a gear adapted to be bodily shiftedtoward and from operative position, and means controlled by the spindledriving belt for autosaid gear to inoperative matically shifting beltbreaks, for the purposition when said pose described.

In a spinning frame, the combination of a series of bobbin spindles,anendless belt arranged to rotate the spindles, a relatively stationarypulley or guide wheel for said belt arranged adjacent one end of theframe,

Copies a second pulley or guide wheel for the belt supported on a slideadjacent the other end of the frame, feed rolls adapted to draw threadfrom bobbins supported on the spindles, means for positively driving thefeed rolls, a spring acting on said slide and guide wheel supportedthereby to maintain the spindle driving belt taut and in operativerelation to the spindles, and means adapted to be actuated by saidspring to automatically render the feed roll driving devices inoperativeif the spindle driving belt breaks.

3 In a spinning frame, the combination of a series of bobbin spindles,an endless belt arranged to rotate the spindles, a relatively stationarypulley or guide wheel for said belt arranged adjacent one end of theframe, a second pulley or guide wheel for the belt supported on a slideadjacent the other end of the frame, feed rolls adapted to draw threadfrom bobbins supported on the spindles, a train of gears for driving thefeed rolls, including a gear adapted to be moved bodily to and fromoperative position, a lever having one arm engaging the slide supportingone of the guide wheels for the bobbin spindle driving belt, a springacting on the other arm of said lever to maintain said belt in operativerelation to the spindles, and a second lever having one arm connectedwith said bodily movable gear and its other arm connected with saidslide, whereby if the spindle driving belt breaks said spring willautomatically cause the bodily movable gear to be shifted to inoperativeposition so that the feed rolls will not draw thread from the bobbinswhen the latter are not rotating.

In testimony whereof I aflix my signature;

ALVA ERNEST OHEESEMAN.

of this patent may be obtained for five cents each, by addressing theCommissioner of Patents,

Washington, D. C.

